Morphometric analysis of dolines

Bondesan, Aldino; Meneghel, Mirco; Sauro, Ugo

doi:10.5038/1827-806x.21.1.1

Cited by 69 publications

(53 citation statements)

References 4 publications

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“…The main parameters used in the morphometric analysis of karst depressions on Earth (Bondesan et al, 1992) such as the area (A), perimeter (P), elongation index (Ei), and circularity index (Ci) were calculated.…”

Section: Morphological Analysis Of the Ild Featuresmentioning

confidence: 99%

Possible evaporite karst in an interior layered deposit in Juventae Chasma, Mars

Baioni¹,

Tramontana²

2017

IJS

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Abstract:This paper describes karst landforms observed in an interior layered deposit (ILD) located within Juventae Chasma a trough of the Valles Marineris, a rift system that belongs to the Tharsis region of Mars. The ILD investigated is characterized by spectral signatures of kieserite, an evaporitic mineral present on Earth. A morphologic and morphometric survey of the ILD surface performed on data of the Orbiter High Resolution Imaging Science Experiment (HiRISE) highlighted the presence of depressions of various shapes and sizes. These landforms interpreted as dolines resemble similar karst landforms on Earth and in other regions of Mars. The observed karst landforms suggest the presence of liquid water, probably due to ice melting, in the Amazonian age.Mars, interior layered deposits, karst, climate change

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Section: Morphological Analysis Of the Ild Featuresmentioning

confidence: 99%

Possible evaporite karst in an interior layered deposit in Juventae Chasma, Mars

Baioni¹,

Tramontana²

2017

IJS

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“…The importance and the problem of the doline upper rim definition have already been discussed by several authors [32][33][34]. Despite this, in most studies the doline upper rim is simply treated as the uppermost closed contour [5,35].…”

Section: Lidar and Morphometrical Analysesmentioning

confidence: 99%

“…Doline rims were, with some prior field examination, determined visually and digitized manually from the shaded relief with the principle of "an abrupt change in the surface slope" [32]. Such a highly subjective method of doline delineation was applied as it was established to be more reliable than automated methods [36].…”

Section: Lidar and Morphometrical Analysesmentioning

confidence: 99%

Geomorphological Dating of Pleistocene Conglomerates in Central Slovenia Based on Spatial Analyses of Dolines Using LiDAR and Ground Penetrating Radar

Čeru

Šegina²,

Gosar

2017

Remote Sensing

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On Kranjsko polje in central Slovenia, carbonate conglomerates have been dated to several Pleistocene glacial phases by relative dating based on the morphostratigrafic mapping and borehole data, and by paleomagnetic and 10 Be analyses. To define how the age of conglomerates determines the geomorphological characteristics of karst surface features, morphometrical and distributive spatial analyses of dolines were performed on three test sites including old, middle, and young Pleistocene conglomerates. As dolines on conglomerates are covered by a thick soil cover and show a strong human influence, the ground penetrating radar (GPR) method was first applied to select dolines appropriate for further morphometrical and distributive analyses. A considerable modification of natural morphology was revealed for cultivated dolines, excluding this type of depression from spatial analyses. Input parameters for spatial analyses (doline rim and deepest point) were manually extracted from the 1 × 1 m grid digital elevation model (DEM) originating from the high-resolution LiDAR (Light Detection and Ranging) data. Basic geomorphological characteristics, namely circularity index, planar size, depth, and density index of dolines were calculated for each relative age of conglomerates, and common characteristics were determined from these data to establish a general surface typology for a particular conglomerate. The obtained surface typologies were spatially extrapolated to the wider conglomerate area in central Slovenia to test the existent geological dating. Spatial analyses generally confirmed previous dating, while in four areas the geomorphological characteristics of dolines did not correspond to the existing dating and require further revision and modification. Doline populations exhibit specific and common morphometrical and distributive characteristics on conglomerates of a particular age and can be a reliable and fast indicator for their dating.

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“…Considering to their significance in the understanding of karst geomorphology, dolines are in focus of numerous geomorphological researches with regards to their morphogenesis (Williams, 1985;Mihevc, 1998;Gams, 2000;Sauro, 2003;2005) or morphometry (Williams 1971;1972;Jennings, 1975;Bondesan et al, 1992;Denizman, 2003;Lyew-Ayee et al, 2007;Pentek et al, 2007). Managing large amounts of morphometric data from maps has become much simpler with the development of geographic information systems (GIS) and digital models of relief (DMR) (Ford, Williams, 2007).…”

Section: Introductionmentioning

confidence: 99%

Prostorni raspored i gustoća ponikava jugoistočnog Velebita

Marković¹,

Bočić

Pahernik

2017

Geoadria

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Dolines are considered to be among the most prominent karst formations, which is why they can serve as diagnostic forms of karst. Their spatial distribution and density are important indicators of an area’s degree of karstification, as well as of an overall geomorphological development. The aim of this paper is to determine the spatial distribution and the density of dolines, and also to analyse the influence of geological structure and morphometric features of the terrain (hypsometry, slope inclination, relative relief) on the spatial distribution of dolines in the area of southeastern Velebit. Moreover, for the first time with regards to the Croatian karst, the spatial distribution of dolines was compared with the spatial distribution of entrances into caves in the southeastern Velebit’s area of Crnopac. The data on the dolines’ position were adopted from 1:25,000 scaled topographic maps. All data were digitalised and analysed with ArcGIS 10.1 software in the GIS laboratory of the Geographic Department of the Faculty of Science in Zagreb. The research showed a strong influence of morphometric parameters of the relief on dolines’ density. The most prominent occurrence of dolines is linked with the areas ranging from 1000 to 1200 meters of altitude, slope inclination lower than 2° and the relative relief of 100 – 200 m per km2. Furthermore, the highest density of dolines was recorded in the Jurassic carbonate layers, while it was determined that the zones of main faults do not have a significant influence on the increase of dolines’ density. A high degree of correlation was determined by comparing spatial distributions and density of dolines and entrances into caves.

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Morphometric analysis of dolines

Cited by 69 publications

References 4 publications

Possible evaporite karst in an interior layered deposit in Juventae Chasma, Mars

Possible evaporite karst in an interior layered deposit in Juventae Chasma, Mars

Geomorphological Dating of Pleistocene Conglomerates in Central Slovenia Based on Spatial Analyses of Dolines Using LiDAR and Ground Penetrating Radar

Prostorni raspored i gustoća ponikava jugoistočnog Velebita

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